https://github.com/xevion/time-banner
Consistent relative timestamps easily from anywhere
https://github.com/xevion/time-banner
datetime rust svg timestamps timezones
Last synced: 3 months ago
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Consistent relative timestamps easily from anywhere
- Host: GitHub
- URL: https://github.com/xevion/time-banner
- Owner: Xevion
- Created: 2023-06-17T00:54:31.000Z (over 2 years ago)
- Default Branch: master
- Last Pushed: 2025-07-10T22:28:02.000Z (4 months ago)
- Last Synced: 2025-07-10T22:49:25.063Z (4 months ago)
- Topics: datetime, rust, svg, timestamps, timezones
- Language: Rust
- Homepage: https://time.xevion.dev
- Size: 1.19 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# time-banner
Dynamically generated timestamp images
## Routes
`GET /[relative|absolute]/[value]{.ext}?tz={timezone}&format={format_string}&now={timestamp}&static={boolean}`
- [x] `{relative|absolute}` - The display format of the time.
- [x] `{value}` - The time value to work with. Relative values can be specified by prefixing with `+` or `-`.
- [ ] Relative values are relative to the value acquired from the `now` parameter (which defaults to the current time).
- Whether the value is relative or absolute has nothing to do with the display format.
- [x] `/absolute/+0` will display the current time in UTC.
- [ ] Note: The `now` parameter is returned in the `Date` response header.
- [x] `Accept` or `{.ext}` - Determines the output format. If not specified, `.svg` is assumed.
- [ ] `Accept` requires a valid MIME type.
- [x] `.ext` requires a valid extension.
- [ ] Supported values: `.png`/`image/png`,
- [ ] `X-Timezone` or `?tz={timezone}` - The timezone to display the time in. If not specified, UTC is assumed.
- [ ] `auto` will attempt to determine the timezone from the client's IP address. Depending on currently unknown factors, this may be disregarded.
- [ ] Return detected timezone in `X-Timezone` response header.
- [ ] `?format={format}` - The format of the time to display. If not specified, `%Y-%m-%d %H:%M:%S %Z` is assumed.
- [ ] Only relevant for `absolute` values.
- [ ] `X-Date-Now` or `?now={timestamp}` - The timestamp to use for relative time calculations. If not specified, the current time is used.
- [ ] `?static={boolean}` - Whether to redirect to a static version of the URL. Useful for creating specific URLs manually.
- [ ] If a value is not passed, (`?static`), `true` is assumed. Anything other than `true`, `1` or `yes` (case-insensitive) is considered `false`.
- [ ] Some header values will be translated to query parameters if provided (not `Accept`).
- [ ] e.g. `/rel/+3600.png?static&now=1752170474` will redirect to `/relative/1752174074.png`
- [x] `/favicon.ico` - Returns a dynamic favicon of an analog clock.
- [ ] Uses naive timestamp from `X-Date-Now` if provided.
- [ ] Uses timezone from `X-Timezone` if provided.
- [ ] Uses IP geolocation to determine timezone if neither is provided.
### Examples
```
/1752170474 => 2025-07-10 12:01:14 UTC
/abs/1752170474 => 2025-07-10 12:01:14 UTC
/absolute/+3600 => 2025-07-10 13:01:14 UTC
/abs/-1800 => 2025-07-10 11:01:14 UTC
/rel/1752170474 => 15 minutes ago
/rel/+3600 => 1 hour from now
/relative/-1800 => 30 minutes ago
/relative/1752170474.png?tz=America/Chicago => 2025-07-10 06:01:14 CDT
/relative/1752170474?type=relative => 2081-01-17 12:02:28 PM
```
## Ideas
- Frontend with React for Demo
- Refetch favicon every 10 minutes
- Click to copy image URLs
- Dynamic Examples
- Dynamic light/dark mode
- `?theme={auto|light|dark}`, default `light`
- Customizable SVG templates
- Dynamic favicon generation
- Clock svg optimized for favicon size
- Move hands to the current time
- Use geolocation of request IP to determine timezone
- Advanced: create sun/moon SVG based on local time
- Support for different timezone formats in query parameters or headers
- `?tz=...` or `X-Timezone: ...`
- `CST` or `America/Chicago` or `UTC-6` or `GMT-6` or `-0600`
- Automatically guessed based on geolocation of source IP address
- Complex caching abilities
- Multi-level caching (disk with max size, memory)
- Automatic expiry of relative items
- Use browser cache headers
- Detect force refreshs and allow cache busting
- `Accept` header support
- IP-based rate limiting
- Multi-domain rate limiting factors
- Computational cost: 1ms = 1 token, max 100 tokens per minute
- Base rate: 3 requests per second
- Cached Conversions
- If PNG is cached, then JPEG/WEBP/etc. can be converted from cached PNG
- Additional date input formats
- 2025-07-10-12:01:14
- 2025-07-10-12:01
- 2025-07-10-12:01:14-06:00
- 2025-07-10-12:01:14-06
- 2025-07-10-12:01:14-06:00:00
- 2025-07-10-12:01:14-06:00:00.000
- 2025-07-10-12:01:14-06:00:00Z-06:00