The node timers appear at the end of a mapblock for map format version >= 25, not just map format version 25.
- 0xffffffff = invalid/unknown timestamp, nothing should be done with the time
difference when loaded
+ u8 name_id_mapping_version
+ - Should be zero for map format version 29.
+
u16 num_name_id_mappings
foreach num_name_id_mappings
u16 id
u8[name_len] name
- Node timers
-if map format version == 25:
+if map format version >= 25:
u8 length of the data of a single timer (always 2+4+4=10)
u16 num_of_timers
foreach num_of_timers: