When to apply (rough calendar)
Dates shift every year — use this as a planning map, then confirm on osprograms.dev and each official site.
| Months | Often happening |
|---|---|
| Jan | Summer of Bitcoin prep; ESoC info event (late Jan) |
| Feb | Summer of Bitcoin applications; ESoC batch 1; 24 Pull Requests prep |
| Mar | GSoC contributor applications; GSSoC registration (some years); ESoC batch 2 |
| Apr | C4GT (some cycles); SSoC registration opens (some seasons) |
| May–Aug | Coding periods (GSoC, SoB, Outreachy May cohort, SSoC, OSPP, etc.) |
| Jun–Jul | MLH Fellowship fall applications (typical); LFX / kernel mentorship apps (some years) |
| Aug | Outreachy initial apps (Dec–Mar cohort); LFX apps (some terms) |
| Oct | Hacktoberfest |
| Dec | 24 Pull Requests; Season of KDE apps (often ~December) |
Year-round
- Outreachy — two cohorts (May & Dec starts); watch initial app windows
- Igalia Coding Experience — rolling / periodic
- NLnet — rolling grant calls
Add corrections via PR when you have an official announcement link.