All times have been adjusted in Belgian local time (UTC + 1 hour in winter time and UTC + 2 hours in summer time).
The days lengthen
- in January with 1h4min
- in February with 1h35min
- in March with 2h
- in April with 1h59min
- in May with 1h40min
- in June (1-21) with 25 min
The days shorten
- in June (21-30) with 5 min
- in July with 1h17min
- in August with 1h58min
- in September with 1h57min
- in October with 1h51min
- in November with 1h20min
- in December (1-21) with 20 min
The days lengthen again
- in December (21-31) with 4 min