Thanks for all the suggested events/dates. I now know why I could not find the birth registrations using index.
Den Haag Geboorteakten, 1811-1909 37% akten beschreven, alle scans aanwezig
Here is link to 1867 Huwelijksbijlagen for Cornelis Lubout en Cornelia van der Zalm
https://www.familysearch.org/ark:/61903/3:1:939X-TWCV-N
This shows extract of birth registraion as #1273
It seems that indexing is random for 1841 births. I searched all 1841 births and sorted by date. The index has only a very few births between Dec-10 and Dec-13 including akte 2197, 2216-2218,2244 with many missing in between.
Birth registration of Cornelis Lubout is akte 2227 (image 376).